Raman-spectral depolarisation ratios of ions in concentrated aqueous solution. The next-to-negligible effect of highly asymmetric ion surroundings on the symmetry properties of polarisability changes during vibrations of symmetrc ions. Ammonium sulphate and teramethylammonium bromide.

Spinner, Ernest2015-12-132015-12-131386-1425http://hdl.handle.net/1885/88530Depolarisation ratios ρ have been measured for the Raman spectra of solutions of composition (NH4)2 SO4 · 11H2O and (CH3)4NBr · 29D2O. Even though the former's vibration spectrum shows clear evidence of lowered ion symmetries (presence of ν1 of SO42-Keywords: Ammonium compounds; Chemical bonds; Crystallography; Ions; Molecular vibrations; Solutions; Depolarisation ratios; Raman spectroscopy; ammonium sulfate; ion; quaternary ammonium derivative; tetramethylammonium; water; article; chemical model; chemistry; e Ammonium sulphate; Depolarization ratios; Intermolecular effects; Raman spectra; Tetramethylammonium bromideRaman-spectral depolarisation ratios of ions in concentrated aqueous solution. The next-to-negligible effect of highly asymmetric ion surroundings on the symmetry properties of polarisability changes during vibrations of symmetrc ions. Ammonium sulphate and teramethylammonium bromide.200310.1016/S1386-1425(02)00293-72015-12-12